Tire interliner



R. scHFER ET Al.

TIRE INTERLINER Filed March 2'8, 1929 /r woven Patented oet. 21, i930 sTArEs TIRE INTnnLiNER Application sied March as, 192s, serial No. 350,5e5gfaaa in Germany November 7.1927.

This invention relatesl toV a ktire Vinsertion for motor driven vehicles and motor cycles, which consists of several layers or strips of fabric 'and linen. Accordingv to' the'finf vention the insert consists.V f l (l) Of a layer of wide-meshed lelastic fabric on which a vlayer of rubber isfvul. canized. On vthis vulcanized layer followsy a layer of dense rawlinen on which follow the like into the Y.air tube is effectively pre-v vented, that further no abnormal heat can be produced by friction, that creeping of the insert in the cover is excluded and that no irregularitiescan be vformed in the insert.

A formof construction of the tire insert V the accompanying drawing in which :v

Fig. 1 is a cross section throughY a `wheel tire with the tubular protecting insert be-` tween the cover and theair tube, a nail which has punctured thecover being shown.

Fig. 2 is a cross section showing the insert laid flat onl thesupport.

Fig. 3 shows in Vtop plan'view a portion of the insert. Y

Fig. 4 `is aperspeotive view, showing the protecting strip of the insert. The lowermost laye'rar of the insert bearing on the air tube consistsof a wide meshed elastic fabric on which "by vulcanization a lrubber layer is iXed so that'a friction exerted upon the air tube is reduced to a mini- The secondV layer b consists of dense raw linen designed to .givethe Shape to thai V f Y 7 cle tires, comprising in combinat1on,an glas;

sert.

two layers of narrow meshed cottonffaloricV through whichfrubber threads are woven. On

fabric through which rubber threads are according tothe invention is illustrated in The Vtwo next higher layers c and d consist of i narrow meshed cotton fabric through'V f which rubber threads are woven and on'which follow at the middle of the insert two layers of raw linen 'e and f impregnated with sul- 55 n V phate of copper so that they possess great density,v smoothness and'toughness and not l'only prevent penetrating by a foreign bodyv (Fig. 1)'fbut push the saine out of direction and equalize the bulging in of the insert and `of .the air tube in cooperation with the air pressure in this tube; The two uppermost layers g and It on the middlelayers ye and f consist, same as the layers c and al, of narrow meshed cotton fabric through which rubber threads are woven. .These uppermost layers enclose, owingto their elastic stretchability, j the penetrating foreign body in such a manner that it cannot get at the air tube. The eight layers a to b arefsuperimposed in pyramidfshape (Fig. 2) so that after a narrow meshed cover a' of tricot'has been placed overV the insert, this (insert can be bent in ringshape. The kouter cover of the insert is. further formed by a gummed linen-'stripZ (Fig. 4:) which encloses the insert and the ends lo of whichare stuck onto the cover i so that the outer rough side of ltheouter cover stripll bearing against the inner side of the tire cover prevents shifting Vof. the insert in the tire cover.

We-claim: Y

- l. In a tire insertion'v for motor-car and motor-cycle tires, a'layer of coa'rse-meshedl elastic fabric covered with-al vulcanized rubf ber layer, a next higher layer of dense'raw i linen, a next higher layer of cotton fabric woven through with rubber threads5A a next higher layer of raw linen impregnated with l threads,- a cover of narrow-meshedelastic woven tricot enclosing all of said other layers Vso that a resistant ring-shaped bandage is formed, and a linen strip on the outer cover k9 5 side of theinterliner adapted to bear. with its] Y VVrough outer surface againstl the outer cover.

ofthe tiref 2. Interliner for motor-car and motor-cyl 2 lue tio coarse meshed fabric on the inner tube side of the inter-liner, setsV of double layers of cotton fabric strips, a rubber strip Vuloanized on its entire surface on the underside of said interliner, linen strips steeped in sulphate of copper between the sets of double layers of cotton fabric strips, rubber threads Woven through the cotton fabrio strips and an outer linen strip having a rough outer r' surface adapted to bear against the outer @over of the tire. 1

Inl testimony whereof We affix our signatures.

' ANDREAS MEIER.

RICHARD SGHFER.A f 'Y Y 

